Satellites

Satellites

Of or relating to any man-made object launched to orbit Earth or another celestial body.

Contributors in Satellites

Satellites

A focused antenna pattern sent to a limited geographical area. Spot beams are used by domestic satellites to deliver certain transponder signals to geographically well defined areas such as Hawaii, ...

Solid state power amplifier (SSPA)

Aerospace; Satellites

A VSLI solid state device that is gradually replacing travelling Wave Tubes in satellite communications systems because they are lighter weight and are more reliable.

Spectrum

Aerospace; Satellites

The range of electromagnetic radio frequencies used in transmission of voice, data and television.

Very small aperture terminal (VSAT)

Aerospace; Satellites

Refers to small earth stations, usually in the 1.2 to 2.4 metre range. Small aperture terminals under 0.5 metres are sometimes referred to Ultra Small Aperture Terminals (USAT's).

Voltage standing wave ratio (VSWR)

Aerospace; Satellites

A measurement of mismatch in a cable, waveguide, or antenna system.

Transponder

Aerospace; Satellites

A combination receiver, frequency converter, and transmitter package, physically part of a communications satellite. Transponders have a typical output of five to ten watts, operate over a frequency ...